qfx5100 48s

Sequential read, SAS Overall performance is 1.3 times times the SATA hard drive, SSD overall performance is SATA hard drive 4 times times. Random Read Test command fio-name IOPS-RW = Randread-bs = 4k-runtime = 60-iodepth 32-filename/dev/sda6-ioengine Libaio- Direct = 1 SATA jobs:1 (f = 1): [R] [41.0% done] [466K/0K/S] [114/0 ioPS] [Eta 00m:36s] SAS jobs:1 (f = 1): [R] [41.0% done] [1784k/0k/s] [456/0 IOPS] [eta 00m:36s] SSD jobs:1 (f = 1 ): [R] [100.0% done] [505m/0k/s] [129k/0 IOPS] [eta 00m

Http://unixboy.javaeye.com/blog/451671 Http://unixboy.javaeye.com/category/75180 RJ45 connector: Used for Ethernet (Ethernet 10/100/1000 m UTP/STP Interface), commonly used in Category 5 unshielded twisted pair wires. RJ-45 is also used for other interfaces such as ISDN, pins are defined differently. Listen 48 connector: Used to connect T1, E1 serial lines, usually using shielded twisted pair wire; RJ-48 can also support pin3, pin6 Grounding Connection. The RJ45 and listen 48 lines are in

output When writing scripts, the pipeline often uses the output of the previous command as the input of the next command. if you want to print the debugging information, but do not interfere with the subsequent commands, you can output the debugging information to the standard error output, as shown below. For example, [root @ LiWenTongtest4] # echo hello> 2 Hello The following are tips for using this method for script debugging on the Internet !!! # Usage: proc_cmd Proc_cmd () { CMD = $1 NUM

After MySQL master-slave replication is built on the two hosts, the showslavestatus displays: Last_IO_Error: errorconnectingtomaster ...... Solve bitsCN.com After MySQL master-slave replication is built on the two hosts, the show slave status displays: Last_IO_Error: error connecting to master ...... Solution Run show slave status on the server load balancer after the master-slave mysql replication relationship is set up for both hosts A and B (master for A and slave for B). The result shows L

state. To see a list of all current connections to the machine and their states, try:Netstat-tan | grep ': 80 ' | awk ' {print $6} ' | Sort | Uniq-cYou'll be presented with a list similar to the following:4 CLOSINGEstablished4 fin_wait1Fin_wait2Last_ack1 LISTENTen SYN_RECV273 Time_waitThis information can is very useful to determine whether for need to tweak some of the timeouts above.SYN Flood ProtectionThese settings added to sysctl.conf would make a server more resistant to SYN flood attacks

Problem: Job for Httpd.service failed. See ' systemctl status Httpd.service ' and ' journalctl-xn ' for details.Status of the problem:(1) Restart[[Email protected] ~] #systemctl Restart Httpd.serviceJob for Httpd.service failed. See ' systemctl status Httpd.service ' and ' journalctl-xn ' for details.650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M02/7A/25/wKioL1ajdZTwR0DPAAAReaQ10So517.png "title=" capture. PNG "alt=" Wkiol1ajdztwr0dpaaareaq10so517.png "/>(2) View status[Email protected

virtual machine, install as few packages as possible and all system updates. Then install the rpm from the CentOS Library mentioned above. There is a Preupgrade Assistant among these rpm, which can be safely executed on the system: the preupg is only an analysis system and does not execute any tasks, after execution, it will provide some suggestions to tell the update program what to search for during the update. Since I only run on a system with few services installed, I did not get the actual

Label:After two hosts A and B build the MySQL master-slave copy relationship (A is master,b to slave), the show slave status is executed on slave, and the results show last_io_error:error connecting to Master ' [ Email protected]:3306 ' ... First, look at the error log file for B, and find the following error: ERROR] Slave I/o: Error connecting to master ' [email protected]:3306 '-retry-time:60 retries:2, error_code:1045 Then use Perror to view the error code obtained from the previous section

least 9s is required to complete the first retry, and Connect-time is less than 9s). Therefore, the error 4 is reported. In a test set to connect-time=10s, the client initiates a connection for the first time, lasts 3s, does not succeed, retries for the first time, retries, does not succeed, arrives at connect-time time, and the client disconnects. Therefore, the error 110 is reported. In summary, assume that the value of/proc/sys/net/ipv4/tcp_syn_retries is n Then, when the TCP initiates the c

C0 2f c0 C0 modified C0 0c C0 02 00 05 00 04 00 15 00 12 00 09 00 14 00-11 For the 0b 00 04 in the same The 0a 0e 0d 00 19, the 0b 0a 00 16 00 17 00 08 00 06 00 07 00 14 00 15 00 04 00 05 00 12-00 13 0f 00 10 00 11 00 23 00 00 0f 00 01 01 ''') HB = H2bin (' " 18 03 02 00 03 01 40 00 ''') def hexdump (s): For B in xrange (0, Len (s), 16): Lin = [C for C in S[b:b + 16]] Hxdat = '. Join ('%02x '% ord (c) for C in Lin) Pdat = '. Join (c if print '%04x:%-

concurrency _________# time range:2015-02-08 06:52:36 to 2015-07-29 09:02:02# Attribute Total min max avg 95% StdDev Median# ============ ======= ======= ======= ======= ======= ======= =======# Exec Time 1405895s 5s 4899s 22s 32s 111s 10s# Lock Time 62995s 0 2476s 983ms 1ms 48s 144us# Rows sent 5.69G 0 44.43M 93.04k 5.75 1.34M 0.99# Rows Examine 13.96G 0 693.12M 228.36k 44.45k 3.49M 0.99# Query Size 37.30M 6 335.57k 610.11 918.49 6.98k 537.02 # p

00 15 00 12 00 09 00 14 00 11 00 04 of the FF at the same 0a, 0e, 0d, 00 19 0b 0c 00 (0a 00 16 00 17 08 00 06 00 07 00 14 00 15 00 04 00 05 00 12 00 13 0f 00 10 00 11 00 23 00 00 0f 00 01 01 ''') HB = H2bin ("' 18 03 02) 00 03 01 40 00 ''') def hexdump (s): For B in xrange (0, Len (s), 16): Lin = [C for C in S[b:b + 16]] Hxdat = '. Join ('%02x '% ord (c) for C in Lin) Pdat = '. Join (c if print '%04x:%-48s%s '% (b, Hxdat, Pdat) Print def recvall (

:32.682448863983sxubo800000:800000-- Time:37.302042007446sxubo900000:900000-- Time:42.112798929214SEnd:1442497444.1373s1000000:47.739441871643 After three Tests, the set instruction of Predis 1 million times is approximately 48s 10 million times set of bad test with PHP, I use a browser access, long time to return the results, also did not find a solution, if there is someone to solve the problem! Test code: require'/home/xubo/cloud/redis/clients

42SIndexing SQL Server tables, incrementally extracting the data, takes 10mn 50s, and the speed is also possible.So in the Vertica in the establishment of similar index projection, the effect is not ideal, the speed has not seen a significant increase, so no, this tuning is not.Debug 3, Temp table + Run scriptFull-scale extraction, time consuming 32sIncremental extraction, time consuming 1mn 48s, the speed has greatly increased.Some error resolution

-animation:bounce_fountaing 1.2s Linear Infinite;-ms-transform:scale (. 3); -ms-border-radius:19px;-o-animation:bounce_fountaing 1.2s Linear Infinite;-o-transform:scale (. 3); -o-border-radius:19px;animation:bounce_fountaing 1.2s Linear Infinite;transform:scale (. 3); border-radius:19px; } #fountainG li:first-child {left:0;-moz-animation-delay:0.48s;-webkit-animation-delay:0.48s;-ms-animation-delay: 0.48s; -o-animation-delay:0.48s; Animation-delay:. 48s